DUWAI High-Performance Mica Board for Electrical Insulation
Mica boards are made by bonding mica paper with silicone adhesive, followed by heating and pressing. The mica content is approximately 90%, with 10% silicone adhesive.
1. Overview of Mica Board
Mica boards are made by bonding mica paper with silicone adhesive, followed by heating and pressing. The mica content is approximately 90%, with 10% silicone adhesive.
2. Product Characteristics of Mica Board
- HP-5 Rigid White Mica Board: This product is silver-white in color, with a temperature resistance rating of 500℃ for continuous use and 850℃ for intermittent use.
- HP-8 Rigid Gold Mica Board: This product is gold in color, with a temperature resistance rating of 850℃ for continuous use and 1050℃ for intermittent use.
- Excellent High-Temperature Insulation: The mica board can withstand temperatures up to 1000℃, offering good value for high-temperature insulation materials.
- Outstanding Electrical Insulation: The standard product has a dielectric breakdown voltage of up to 20KV/mm.
- Superior Flexural Strength and Workability: The product has high flexural strength and excellent toughness, allowing it to be punched and processed into various shapes without delamination.
- Excellent Environmental Performance: The product is asbestos-free, emits little smoke, and produces minimal odor, or even no smoke or odor, when heated.
- HP-5 Rigid Mica Board: This is a high-strength board material that retains its original properties even under high-temperature conditions.
3. Applications of Mica Board
- Household Appliances: Used in electric irons, hair dryers, toasters, coffee makers, microwave ovens, and electric heaters.
- Metallurgy and Chemical Industry: Used in power frequency furnaces, intermediate frequency furnaces, electric arc furnaces, and injection molding machines in the metallurgy industry.
4. Technical Specifications of Mica Board
Serial Number | Index Item | Unit | R-5660-T1 | R-5660-T3 | Test Procedure |
1 | Mica Paper | 白云母 | 金云母 | ||
2 | Mica Content | % | ca.88 | ca.88 | IEC 371-2 |
3 | Adhesive Content | % | ca.12 | ca.12 | IEC 371-2 |
4 | Density | g/cm2 | 2.35 | 2.35 | IEC 371-2 |
5 | Temperature Grade | ||||
Under Continuous Use Conditions | ℃ | 500 | 700 | ||
Under Intermittent Use Conditions | ℃ | 800 | 1000 | ||
6 | Water Absorption Rate 24H / 23°C | % | <1 | <2 | GB/T5019 |
7 | Electrical Strength at 20°C | KV/mm | >20 | >20 | IEC 243 |
8 | Insulation Resistance at 23°C | Ω .cm | 1017 | 1017 | IEC93 |
Insulation Resistance at 500°C | Ω .cm | 1012 | 1012 | IEC93 | |
9 | Fire Resistance Rating | 94V0 | 94V0 | UL94 |